ɬÀï·¬

Xin Zhao

Image by Tom DiSandolo.

Professor - Animal Physiology; Distinguished James ɬÀï·¬ Professor

T: 514-398-7975  | xin.zhao [at] mcgill.ca (Email) |  Macdonald-Stewart Building, MS1-084

Degrees

BSc, MSc (Nanjing Agricultural University, China)
PhD (Cornell)

Short Bio

Xin Zhao obtained a bachelor degree in Animal Science in 1982 and a Master Degree in Nutritional Physiology and Biochemistry in 1985 from Nanjing Agricultural University, China. Then, he went to US for his PhD study. After completing his PhD study in 1989 from Cornell University, he went to Canada for his postdoctoral study first in the University of Guelph and then in the University of Toronto. He started working at ɬÀï·¬ as an Assistant Professor in 1993 and was promoted to Associate Professor in 1997 and Full professor in 2006.

Awards and Recognitions

  • 2021- Distinguished James ɬÀï·¬ Professor
  • 2016 West Agro, Inc. Award, American Dairy Science Association
  • 2014-2021 James ɬÀï·¬ Professor, ɬÀï·¬
  • 2011 Canadian Society of Animal Science Fellowship Award
  • 2007-2014 James ɬÀï·¬ Professor, ɬÀï·¬
  • 2006 Canadian Society of Animal Science's award for Technical Innovation in Enhancing Production of Safe Affordable Food
  • 2002-2006 William Dawson Scholar, ɬÀï·¬

Active Affiliations

  • 2020-2023: Board director for American Dairy Science Association (ADSA)
  • 2020-2024 Member of the Research Committee, Dairy Cattle Genetics and Research (DairyGen) Council of Canadian Dairy Network

Research Interests

My research interests pertain to mammary gland health in dairy cows and gut health in poultry. In dairy research, we focus on pathogenesis of mastitis, antibiotic resistance and genetic determination of milk components. In poultry research, we work on prebiotics, probiotics and gut microbiome.

Current Research

Antimicrobial resistance of staphylococci from mastitic milk

We are working on (a) to reveal organizational and structural characteristics of antibiotic resistant genes in milk staphylococcal isolates; (b) to study the horizontal gene transfer of antibiotic resistance genes among staphylococcal isolates.

Prebiotics and probiotics for poultry production

We are systematically investigating effects of potential prebiotics and probiotics on production parameters, immune responses and gut microbiota in chickens, in order to reduce usage of antibiotics as growth promoters in poultry production.

Lactation physiology

We are working on (a) to develop new strategies to speed up the mammary gland involution during early dry periods, in order to reduce the incidence of mastitis during the early dry period; (b) to investigate genetic influence of milk components, in order to provide potential targets for animal breeding programs; (c) to study how heat stress affects milk production, in order to develop measures to mitigate the negative effects.

Courses

ANSC 234. Biochemistry 2.

Note: For information about Fall 2025 and Winter 2026 course offerings, please check back on May 8, 2025. Until then, the "Terms offered" field will appear blank for most courses while the class schedule is being finalized.

Credits: 3
Offered by: Animal Science (Faculty of Agric Environ Sci)
Terms Offered: Winter 2026
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Description

Metabolism in humans and domestic animals. The chemistry of alimentary digestion, absorption, transport, intermediary metabolism and excretion.
  • 3 lectures and one 3-hour lab
  • Prerequisite: FDSC 211 or LSCI 211
  • Prerequisite: LSCI 211

Most students use Visual Schedule Builder (VSB) to organize their schedules. VSB helps you plan class schedules, travel time, and more.


ANSC 551. Carbohydrate and Lipid Metabolism.

Note: For information about Fall 2025 and Winter 2026 course offerings, please check back on May 8, 2025. Until then, the "Terms offered" field will appear blank for most courses while the class schedule is being finalized.

Credits: 3
Offered by: Animal Science (Faculty of Agric Environ Sci)
Terms Offered: Winter 2026
View offerings for in Visual Schedule Builder.

Description

Comparative aspects of nutrition and metabolism of carbohydrate and lipid from the cellular level through the multi-organ of the whole organism. Main topics will include biothermodynamics, calorimetry, cellular metabolism and functions of carbohydrate and lipid, digestion, absorption and utilization of dietary carbohydrate and lipid.
  • Winter
  • 3 lectures
  • Prerequisite: ANSC 234 or permission of instructor

Most students use Visual Schedule Builder (VSB) to organize their schedules. VSB helps you plan class schedules, travel time, and more.

Publications

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